Production method of the additive for the paper manufacture and the additive for the paper manufacture and the paper which contains the additive for the paper manufacture

摘要

As for this invention, the paper making which accompanies the wobble of quality of the paper manufacture raw materials regarding the circumstance which the paper power reinforcement effect which mixture of the shives and specks which accompany the fluctuation of pH of pulp slurry in the occasion where it does and the deterioration of the paper manufacture raw materials, and increase etc of the minute fiber occur is difficult to be obtained, the filtered water characteristic which is superior, the additive for the paper manufacture which shows yield rate, and the paper power reinforcement effect, and that its production method is offered are designated as purpose.Solution expedient (a) (meta) acrylamide, (b) the carboxyl group and/or vinyl monomer and its salts which possess sulfonate group, (c) the vinyl monomer which possesses 3 classes or 4 class amino groups, and (d) the monomers which contain building a bridge characteristic monomer after starting the polymerization including the polymerization initiator, monomers at the point in time when (A) reaction ratio reaches to 20 - 96%, furthermore the description above (a) and (b), (c), and (d) the monomer solution which contains at least a kind of monomer of monomer dripping (B), in (A), you polymerize.